There have been a few pieces of Ultima-related
clothing, but not many. Ulitma V and Savage Empire both had related
tee shirts which were sold around the time of their releases, and
that's about it. Origin also has some corporate clothing and
accessories that they give away at conventions and such. I'm
surprised that there hasn't been more in the way of garb, but maybe
with the upcoming releases of Ultima Online and Ultima IX, fans
will find new ways to clothe themselves with the trappings of
Britannia.

For now, though, you'll have to make do with other options. You
could always go and get your Ultima IV
ankh and wear it on a chain. Or if you really, really must have
some Britannian looking clothing or accessories, try the Society for Creative Anachronism. They
have people who will sell you any kind of medieval garb, from
tunics to doublets to full sets of plate armor. Their web site has
an extensive list of merchants, so you can shop to your heart's
delight, or at least until your spouse seizes the credit
cards.

Ultima V tee
shirt

Publisher: Origin Systems, Inc.

Characteristics: Cotton tee shirt. S,M,L,XL. Front:
"Warriors of Destiny" and the Ultima V cover art, Back: "Ultima V:
The wait is over... but the excitement has just begun."

Original List Price: $8.95

Origin began selling this tee shirt when Ultima V was released.
It was first advertised in their Spring 1989 catalog.

This item was advertised first in the 1990-91 catalog included with many
copies of Ultima VI, which came out
before Savage Empire, albeit not by much. It was also advertised on
the back page of the game manual that came with Savage
Empire.

Origin
clothing

Origin gives away various pieces of company garb, at conventions
and elsewhere. Among these are tees, polo shirts, jackets, and a
nifty denim cap. A must for the truly obsessed.

Origin did once advertise their shirts for sale, in their Spring 1990 catalog - white
poly/cotton blends with the old Origin grid logo, which sold for
$14.95 each. But they don't sell them these days.

Design Team
shirts

Apparently, there have been design team t-shirts created for
each Ultima since U5, including both Worlds of Ultima games and
Serpent Isle. I haven't actually found any of these, nor do I know
how collectible they might be. Not very, I'd expect.